1 /* mpc_arg -- Get the argument of a complex number.
2
3 Copyright (C) 2008, 2009, 2011 INRIA
4
5 This file is part of GNU MPC.
6
7 GNU MPC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU Lesser General Public License as published by the
9 Free Software Foundation; either version 3 of the License, or (at your
10 option) any later version.
11
12 GNU MPC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
14 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
15 more details.
16
17 You should have received a copy of the GNU Lesser General Public License
18 along with this program. If not, see http://www.gnu.org/licenses/ .
19 */
20
21 #include "mpc-impl.h"
22
23 int
mpc_arg(mpfr_ptr a,mpc_srcptr b,mpfr_rnd_t rnd)24 mpc_arg (mpfr_ptr a, mpc_srcptr b, mpfr_rnd_t rnd)
25 {
26 return mpfr_atan2 (a, mpc_imagref (b), mpc_realref (b), rnd);
27 }
28